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-- select -- c.last_name, -- c.first_name, -- t1.cnt -- from customer c -- join ( -- select -- r.customer_id, -- dense_rank() over(order by count(*) desc) as rank, -- count(*) as cnt -- from rental r -- group by r.customer_id -- ) t1 on c.customer_id = t1.customer_id -- where t1.rank <= 3 -- order by t1.cnt desc, c.last_name asc select r.customer_id, dense_rank() over(order by count(*) desc) as rank_r, count(*) as cnt from rental r group by r.customer_id

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